Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0318d9c05a1933e7a369a59a425973db81dbba91b9d9b24acec4fe67ab80eb27' 
  AND token = 'c/aXdsy0b4kLP85iivsU4EDEpptIIBRShvJUGsRvD10=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}